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在河西走廊东北部、石羊河流域最下游有一片绿洲,它形如一把绿色的楔子,顽强地阻击着巴丹吉林、腾格里两大沙漠的合拢,保护着整个河西走廊的生态、经济安全,堪称国家西部风沙线上的一座桥头堡。这里是全国最干旱、荒漠化最严重
In the northeastern Hexi Corridor, the most downstream of the Shiyang River Basin is an oasis shaped like a green wedge that stubbornly blocks the closure of the Badain Jaran and Tengger two big deserts and protects the ecological and economic development of the entire Hexi Corridor. Safe, called a bridgehead on the sand west of the country. This is the driest and most deserted country in the country